334 citations · 2k across the 81 of their papers we have counts for
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Possibility of a minimal purity-measurement scheme critically depends on the parity of dimension of the quantum system
Toru Tanaka, Gen Kimura, Hiromichi Nakazato
In this paper, we investigate the possibility of measuring the purity of a quantum state (and the overlap between two quantum states) within a minimal model where the measurement d…
A controlled-NOT gate in a chain of qubits embedded in a spin field-effect transistor and its process tomography
Makoto Unoki, Hiromichi Nakazato, Kazuya Yuasa +1
We have investigated the realizability of the controlled-NOT (CNOT) gate and characterized the gate operation by quantum process tomography for a chain of qubits, realized by elect…
A measurement scheme for purity based on two two-body gates
Hiromichi Nakazato, Toru Tanaka, Kazuya Yuasa +2
A scheme for measuring the purity of a quantum system with a finite number of levels is presented. The method makes use of two square root of SWAP gates and only hinges on measurem…